21484778

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 38206080

約数和(自身を除く): 16721302

約数列:

[1, 2, 7, 14, 43, 86, 89, 178, 301, 401, 602, 623, 802, 1246, 2807, 3827, 5614, 7654, 17243, 26789, 34486, 35689, 53578, 71378, 120701, 241402, 249823, 499646, 1534627, 3069254, 10742389, 21484778]

約数ペア:

[(1, 21484778), (2, 10742389), (7, 3069254), (14, 1534627), (43, 499646), (86, 249823), (89, 241402), (178, 120701), (301, 71378), (401, 53578), (602, 35689), (623, 34486), (802, 26789), (1246, 17243), (2807, 7654), (3827, 5614)]